Home
Class 12
CHEMISTRY
Given the bond energies of H - H and Cl ...

Given the bond energies of `H - H` and `Cl - Cl` are `430 kJ mol^(-1)` and `240 kJ mol^(-1)`, respectively, and `Delta_(f) H^(@)` for `HCl` is `- 90 kJ mol^(-1)`. Bond enthalpy of `HCl` is

A

`245 kJ mol^(-1)`

B

`2909 kJ mol^(-1)`

C

`380 kJ mol^(-1)`

D

`425 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise ASSIGNMENT (Section - B) Objective Type Questions|35 Videos

  • THE SOLID STATE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

Bond energies of H-H and Cl-Cl are "430 kJ mol"^(-1) and "242 kJ mol"^(-1) respectively. DeltaH_(f) for HCl is "91 kJ mol"^(-1) . What will be the bond energy of H-Cl ?

The bond energies of H-H and l - I bonds are 435 kJ mol^-1 and 150 kJ mol^-1 respectively. If deltaH_t^O for Hl is 26.5 kJ mol^(-1) then bond enthalpy of H-l bond is

The bond enthalpies of H-H and CI-CI are 430 and 242 kJ mol^(-1) , respectively. If DeltaH_(f) (HCI) is -91 kJmol^(-1) the bond enthalpy of HCI would be

Calculate the bond enthalpy of HCl. Given that the bond enthalpies of H_(2) and Cl_(2) are 430KJmol^(-1) and 242KJmol^(-1) respectively and Delta_(f)H^(0)HCl is -91KJmol^(-1) )

Bond dissociation enthalpies of H_(2(g)) and N_(2(g)) are "426.0 kJ mol"^(-1) and "941.8 kJ mol"^(-1) , respectively, and enthalpy of formation of NH_(3(g))" is "-"46 kJ mol"^(-1) . What are the enthalpy of atomisation of NH_(3(g)) and the average bond enthalpy of N-H bond respectively ( in kJ "mol"^(-1) )?

The heat of atomisation of PH_(3)(g) and P_(2)H_(4)(g) are 954 kJ mol^(-1) and 1485 kJ mol^(-1) respectively. The P-P bond energy in kJ mol^(-1) is

AAKASH INSTITUTE-THERMODYNAMICS-ASSIGNMENT (Section - C) Previous Years Questions
  1. Which of the following are not state functions? (i) q+ w (ii) q ...

    Text Solution

    |

  2. Consider the following reactions: (i) H^(+)(aq)+OH^(-)(aq)rarrH(2)O(...

    Text Solution

    |

  3. Given the bond energies of H - H and Cl - Cl are 430 kJ mol^(-1) and 2...

    Text Solution

    |

  4. Identify the correct statement for change of Gibbs energy for a system...

    Text Solution

    |

  5. Assume each reaction is carried out in an open container. For which r...

    Text Solution

    |

  6. The enthalpy and entropy change for the reaction Br(2)(l) + Cl(2)(g)...

    Text Solution

    |

  7. At 25^(@)C, standard enthalpy of combustion of combustion of hydrogen,...

    Text Solution

    |

  8. A reaction occurs spontaneously if

    Text Solution

    |

  9. Which of the following pairs of a chemical reaction is certain to resu...

    Text Solution

    |

  10. The absolute enthalpy of neutralization of the reaction, MgO(s)+2HCl...

    Text Solution

    |

  11. Which reaction, with the following values of Delta H, Delta S, at 400 ...

    Text Solution

    |

  12. Given : (i) C("graphite") + O(2)(g) rarr CO(g) ,Delta(r )H^(@) = xkJ...

    Text Solution

    |

  13. Following reaction occurring in an automobile 2C(8)H(18)(g)+25O(2)(g) ...

    Text Solution

    |

  14. When 5 litres of a gas mixture of methane and propane is perfectly com...

    Text Solution

    |

  15. The enthalpy of formation for C(2)H(4)(g), CO(2)(g) and H(2)O(l) at 25...

    Text Solution

    |

  16. For a reaction to occur spontaneously

    Text Solution

    |

  17. Given that C + O(2) rightarrow CO(2), Delta H^(@) = - x k J 2CO +O...

    Text Solution

    |

  18. Identify the correct statement regarding entropy

    Text Solution

    |

  19. One mole of an ideal gas at 250 K is expanded isothermally from an ini...

    Text Solution

    |

  20. Given : S((s))+(3)/(2)O(2(g))rarrSO(3(g)+2X Kcal SO(2(s))+(1)/(2)O(2...

    Text Solution

    |